| Type of Document |
Dissertation |
| Author |
Rayyan, Saifuddin Ramadan
|
| Author's Email Address |
srayyan@vt.edu |
| URN |
etd-05242007-151447 |
| Title |
Phenomenological Consequences of Heavy Right Handed Neutrinos |
| Degree |
PhD |
| Department |
Physics |
| Advisory Committee |
| Advisor Name |
Title |
| Takeuchi, Tatsu |
Committee Chair |
| Chang, Lay Nam |
Committee Member |
| Minic, Djordje |
Committee Member |
| Mizutani, Tetsuro |
Committee Member |
| Pitt, Mark L. |
Committee Member |
| Schmittmann, Beate |
Committee Member |
|
| Keywords |
- Right Handed Neutrinos
- CP violation
- Electric Dipole Moment
|
| Date of Defense |
2007-05-10 |
| Availability |
unrestricted |
Abstract
The discovery of neutrino mixing provides the possibility of a non
vanishing CP violating phase in the neutrino mixing matrix. CP
violation in the leptonic sector can be large enough to explain the
matter-antimatter asymmetry in the universe. An indirect probe of CP
violation is the experimental measurement of Electric Dipole Moment
(EDM). CP violation has been discovered in the quark sector,but it
contributes to lepton EDM at the 3-loop level.
Neutrino masses can be generated in the standard model via the
see-saw mechanism where heavy right-handed neutrinos mix with the
weak-basis states. The Majorana nature of the seesaw type neutrinos
generates new 2-loop diagrams that lead to a non-vanishing lepton
EDM. Only estimates of the resulting EDM have been done in the
literature. A full calculation of the 2-loop diagrams and the exact
result is presented.
|
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rayyan.pdf |
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